I can provide information on commonly regarded useful knives and tools based on general consensus and user reviews.
One of the most versatile and useful knives that many people find valuable is a multi-purpose folding knife, such as a Swiss Army Knife or a multi-tool. These knives often include various tools like blades, screwdrivers, scissors, can openers, bottle openers, and more, all integrated into a compact and portable design. The versatility and range of functions make them handy for a wide range of tasks, including camping, outdoor activities, everyday carry, and emergency situations.
Another highly regarded tool is a utility knife, also known as a box cutter or retractable knife. Utility knives feature a retractable and replaceable blade, making them excellent for tasks that require precision cutting, opening packages, or breaking down boxes. They are commonly used in industries such as construction, shipping, crafts, and household tasks.
Other useful knives and tools can vary depending on specific needs and interests. For example, for outdoor enthusiasts and survivalists, a fixed-blade knife with a sturdy and durable construction is often valued for its reliability in demanding conditions. For chefs and cooking enthusiasts, a high-quality chef's knife or a specialized kitchen tool like a mandoline slicer can be incredibly useful.
Ultimately, the most useful knife or tool for you will depend on your specific requirements, interests, and the tasks you frequently perform. Consider the functionality, quality, and suitability for your intended use when selecting a knife or tool to ensure it meets your needs effectively.